Everything to do with using your own website to advertise your rental property. Design, usability, hosting, getting listed on the search engines, optimising your site, pay-per-click, etc, etc.
Yes, and I found it just about the easiest way to create a webpage. It takes about 2 minutes. I didn't really like any of the templates, but for someone who wants an instant webpage without any html knowledge at all, it is a good solution.